Everything to learn, evaluate, and build with Gudu SQLFlow — start with the free visualizer, browse column-level lineage guides for your database, explore the products and editions, or dive into the developer docs and REST API.
20per-database lineage guides
39SQL dialects supported
Freeonline visualizer — no signup for examples
RESTAPI, Java library, and JS widget
Just want to try it? Paste a query into the free online SQL lineage visualizer and see column-level lineage in seconds.
Data lineage by database
How SQLFlow builds column-level data lineage for each database — the dialect specifics, what it parses, and the lineage you get. Pick your platform:
SnowflakeColumn-level lineage from query history
SQL ServerT-SQL, stored procedures, dynamic SQL
OraclePL/SQL procedures, packages, triggers
PostgreSQLColumn lineage from views and SQL
MySQLLineage through views and ETL SQL
BigQueryColumn-level lineage for BigQuery SQL
Amazon RedshiftAutomated lineage from query logs
DatabricksSpark SQL and Delta lineage
TeradataLineage for migrations and compliance
Azure SQLAzure SQL and Synapse SQL lineage
Apache HiveColumn lineage for HQL and Hadoop ETL
Spark SQLColumn lineage for Spark pipelines
Trino & PrestoLineage across federated SQL
IBM Db2Column-level lineage for Db2 SQL
GreenplumColumn lineage for MPP warehouses
NetezzaMap column dependencies before migration
VerticaLineage from projections and SQL
SAP HANAColumn lineage for HANA SQL and views
ClickHouseTrace columns through materialized views
DuckDBLineage for in-process analytics
Learn data lineage
What is data lineage?Definition, examples, and how it works
Column-level lineageWhy table-level lineage is not enough
Data lineage examples6 real scenarios with SQL and diagrams
Best data lineage tools 2026An honest comparison of 10 options
Knowledge baseConcepts, guides, and lineage by database
SQLFlow FAQProduct, data, pricing, and account answers
Products & editions
SQLFlow — SQL data lineage toolAutomated column-level lineage, overview
SQLFlow CloudOnline lineage visualizer, free tier
SQLFlow On-PremiseSelf-hosted, air-gapped deployment
SDLP — Data Lineage PlatformEnterprise system of record with governance
SQLFlow REST APIAutomate lineage extraction over HTTP
SQLFlow Ingester (Grabit)Collect SQL from databases, Git, files
Java libraryEmbed the lineage engine in JVM apps
PricingFree, premium, on-premise, and enterprise
Documentation & developer resources
DocumentationGuides, tutorials, and reference at docs.gudusoft.com
REST API referenceEndpoints, authentication, and schemas
Exporter output formatsSingle JSON and sharded metadata reference
Downloads & GitHubIngester releases and public repository
Data catalog integrationFeed DataHub, Purview, and OpenMetadata
General SQL ParserThe parser engine behind SQLFlow
See your SQL’s lineage now
Paste a query into the free visualizer, or talk to us about scanning your whole estate.